Steam-boiler furnace



2 Sheets-Sheet 1.

(No Model.)

L. HALLBAUER.

STEAM BOILER FURNACE.

Patented Aug. 25, 1896.

% Q 1712/62? for,

L ouz'e jia/Mauer gy 211 9 J Wilnsses f// (No Model.) 2 Sheets-Sheet 2.

L. HALLBAUER.

STEAM BOILER FURNACE.

Patented Aug. 25, 1896.

I14 vex 1101' L OZIZS Hal/[blazer 2?%j 1-2 1 'lln nnnn Sir-anus PATENTthrone LOUIS'HAIJ'LBAUER, OF MERIDEN, CONNECTICUT.

SPECIFICATION forming part of Letters Patent No. 566, 3 IL 1 datedAugust .2 5, 1 896. Application filed September 27 1 8 9 5. Seria1NoP563j8 72. (-No model.)

To all whom itrrutyconcern:

Be it known that I, LOUIS HALLB'AUER, a citizen of the'United States,residing at Meriden, in i the county of New Haven and State ofConnecticut,h-ave invented certainnew'and useful Improvements inSteam-Boiler Furnaces, of which the followingis aspecification.

This invention relates to furnaces more particularly designated as steamboiler furnaces, and the object of'the inventionis 'to provide anapparatus inwhich particles-of in one portion thereof willbe'constantlymaintained, although thefires-in 'another'portion of the apparatus maybe running low.

A' further object of the. invention is' to provide an apparatusinwhichthe feeding of the f uel-charnberswill have'no "appreciableefiect on the combustionin another portion of the apparatus, and thecombustion thereby maintained without interruption and with less care onthe part of the fireman.

In the accompanying drawings, forming part of thisspecifi'cation, Figure-1 -is-a-front viewof oneform of asteam boilerfurnace constructed toaccomplish the purpose above set forth, and showing parts thereofindotted lines. Fig. 2' is a longitudinal;partly-sectionalview taken inline bi), Fig. 1,-showing one of the boilers and its-combustion-chamber.Fig. 3 is a topview of the steam-boiler furnace, a part thereof beingbroken away to show in section one of the combustion-chambers and itsboiler in positionrel'atively thereto. Fig. 4 is a cross-sectional view, partly in full lines, taken in line a d, Fig.2. Fig. 5is

a longitudinal partly-sectional View taken in line 0 c, Fig. 1, andshowing thesecondary or auxiliary combustion-chamber and its boilerimposition relatively thereto; 'andFi'g. 6 is a rear end view of thesteam boiler fur- It is obvious that my invention can be enibodied inother formsofboilers and other closed in suitable masonry 13.

producing and disposing of products of combustion; but'for the purposesof this specificationthe same will be described in connection-with'a'steam-boiler furnace substantially similarto that shown.

My invention consists, in 'ajgeneral Way, of a series of 'steam boilers,oneor more ofsaid boilers havingafurnace-chamber consisting of aprimaryor original combustion-chamber and 'a f uel-chamber or fire-box adjacentthereto,-and one or more of said boilers having a secondarycombustion-chamber in which the products of combustion drawn from theoriginal combustion-chamber are ignited by means ofa flame or highlyheated products drawn from the fuel-chamber of the other boiler,together with means for 'conveyin g the products of combustion'from theoriginal combustionchamber of the boiler to the secondaryCOIIlbustion-chamber, and in the preferred form thereof herein shown anddescribed the steamboil'erfurnaceconsists of aseries of three boilers10,11, andlzl, preferably disposed and in- These boilers are preferablydisposed side by side, and the middleboiler 11 of the series ispreferably somewhat larger than the other boilers, but is so disposed,however, that the upper portion thereof will preferably be on ahorizontal plane with its adjacent companion boilers.

Below each of the smaller boilers 10 and 11 afurnace-ohamber is'forinedin any suitable way, and embodies a combustion -chamber 14, which willbehereinafter designated as the primary or original combustionchamber,and the usual fuel-chamber. orfirebox 15 adjacent to thecombustion-chamber, and having the usual grate-bars 16, adapted "tosupport the fuel, and also'having an ashpit 17 below the fire-box.

Furnace-doors 18, provided withsuitable drafts 19,permitaccess tothefuel-chambers l5, and through which doors the fuel is thrown to feedthefurnace. The ash-pits 17 are like- Wise provided-with similardoors.20 for removing the ashes therefrom and having suitabledraft-regulators therein.

The usual bridge-walls 21 divide the combustion-chambers from theash-pits andfireboxes and form a means of supporting one end of thegrate bars16, which grate-bars are support-ed thereon and adjacent totheforward end of the fuel-chambers in any suitable way.

All of the boilers are provided with any desired number of flue-tubes22, extending from head to head thereof, and through which the heatedgases and products of combustion are adapted to pass from the rear endsof the combustion-chambers to the forward ends of the boilers.

The secondary or auxiliary combustionchamber is formed adjacent to andpreferably underneath the middle boiler 11, and in this chamber thecombustible gases and products of combustion that have not been consumedin the primary combustion-chambers are again ignited and practicallyconsumed and the heat generated therefrom utilized for heating the waterin the boiler 11. This secondary combustion-chamber is constructed inanysuitable manner, and communicates with the fuel-chambers by means ofpassage-Ways 26, formed through the walls of the masonry dividing theboilers from each other, and through which passage-ways the flame orheated products of combustion from the fuel-chambers are drawn to ignitethe gases and products of combustion conducted to such secondarychamber.

In order to conduct the non-consumed combustible gases and products fromthe primary combustion -chambers 14 to the secondary combustion-chamber25, so that the same may be substantially consumed and the heatgenerated therefrom utilized, at the forward end of each small boiler 10and 12 a chamber 27 is formed, having openings at that portion thereofadjacent to the middle boiler 11, and these chambers 27 are connectedwith each other by means of downwardly-inclined passages 28, terminatingadjacent to the lower portion of the forward end of the middle boiler 11in a chamber 29, opening into the secondary or auxiliarycombustion-chamber 25. These downwardly-extending passages 28 are in thenature of downtake-fiues leading from the chambers 27-into which theends of the flue-tubes 22 open-to the chamber 29, opening into thesecondary or auxiliary combustion-chamber 25.

The chambers 27 and 29 and downtake-fiues 28 are shown located outsideof the masonry 13 adjacent to the front of the boilers; but it isunderstood that they might be built inside the same or at any othersuitable place, if desired, and constructed in any suitable way; but inthe construction shown, however, in the preferred form thereof, the endboilers 10 and 11 have their cylindrical walls extending beyond theheads 30 of the boilers and have openings cut therein at that portionadjacent to the middle boiler 11. A suitable casing 31 is provided forclosing the ends of these chambers and extends downwardly therefromadjacent to the forward end of the middle boiler 11, forming thedowntake-flues 28 and the chamber 29, opening into the secondary orauxiliary combustion-chamber 25 beneath the boiler 11, the top wall ofthis chamber 29 being formed by the under wall of the middle boiler 11,extending forward beyond its head 32.

The front wall of the chamber 29 is provided with suitable dampers 33for the admission of fresh air to the chamber 29 and the combustionchamber 25, and in the form shown these dampers are preferably of theusual rotary type.

Below the chamber 29 the secondary combustion-chamber 25 is providedwith a suitable door 34 for the removal of ashes and the proper cleaningof said chamber.

The boilers are provided with suitable steam-pipes in connection witheach other and in connection with the main steam-pipe 41. Suitablevalves 42 are also disposed in the pipes 40, whereby the steam can beshut off from either one or both of the small boilers 10 and 12, so thatsteam can be used only from the main boiler.

Suitable connecting-pipes 45, provided with suitable valves 46, 47, 48,and 49, are provided for connecting the boilers with each other, wherebyone or more boilers may be in operation while the remaining boiler orboilers are out of use. For instance, if the boilers 10 and 11 are inuse the valve 48, connecting the boiler 12 with the boiler 11, would beclosed and the valve 49 opened to permit the blow-off of the boiler 12.

Adjacent to the forward head of the boiler 11 a smoke-box 50 isconstructed in any suitable way, into which the flue-tubes 22 from themain or middle boiler 11 open, and connected with this smoke-box is theusual smokestack 51 for conveying the smoke from the apparatus. Thesides or side plates of this smoke-box may, if desired, constitute apart of the upper walls of the downtake-flues 28.

Any suitable means (not shown) for feeding the boilers may be provided.

In the operation of this improved apparatus the combustible gases orproducts of combustion generated in the primary or original combustionchambers 14 of the furnacechambers under the boilers 10 and 12 arecarried by the draft to the rear ends of the boilers 10 and 12, andthence through the fines 2 in said boilers, in which the combustionthereof ceases, and the combustible gases and products are then carriedinto the chambers 27 at the forward ends of said boilers, from whencethey are drawn downwardly through the downtake-flues 28 into the chamber29, opening into the secondary or auxiliary combustion-chamber 25 belowthe middle boiler 12, and are drawn under said boiler and into saidcombustion-chamber 25 and the unconsumed combustible gases and productsagain ignited by the flame or heated products coming through thepassage-ways 26 from the fire-boxes or fuel-chambers 14, air sufficientto support combustion being admitted into the combustion-chamber 25through the dampers The remaining small portion of the unconsumed gasesor products of combustion generated in the secondary combustionchamber25 are then carried to the rear of the chamber and through theflue-tubes 22 in said middle boiler 11, and into the smoke-box 50, andthen conveyed therefrom by the smokestack 51. Bythisimprovedconstruction the unconsumed gases and products of combustion coming fromthe original or primary combustion-chambers 14: are substantiallyconsumed when they reach the secondary combustion-chamber 25 and theheat thereof utilized adjacent to the middle boiler 11 for heating thewater therein. Furthermore, by this construction either one of thefurnaces, in connection with the boilers 10 and 11, may be firedindependently of the other,whereby, by the running of one of the sideboilers, the

-middle boiler can also be kept in operation,

and whereby the combustion in the secondary chamber is maintained at alltimes; also, by this improved construction, in case the fires adjacentto one of the primary combustionchambers are running low, the combustionin the secondary chamber would be main tained, and hence the apparatusrequires less care on the part of the fireman than is ordinarily thecase. Moreover, by this improved construction the flame or jet carriedto the secondary combustion-chamber through the passage-way 26 from thefuel-chamber of one boiler will not be put out when the door of the fuelor combustion chamber of the opposite side boiler is opened to feed thefire-box.

Having thus described my invention, I claim-- 1. In an apparatus of theclass specified, the combination of aseries of separate and independentboilers; one of said boilers having a furnace-chamber comprising afire-box and a primary combustion-chamber adapted to heat the same; andthe other boiler having an independent combustion-chamber without afire-box, operatively connected with said furnace-chamber and adapted toheat said boiler by the combustible material drawn from the primarycombustion-chamber when ignited by the flame or heated products ofcombustion drawn from the fire-box of the furnace-chamber, substantiallyas set forth.

2. In an apparatus of the class specified, the combination of a boilerhaving a furnacechamber comprising a fire-box and an originalcombustion-chamber; an independent second boiler having a secondarycombustionchamber independent of and separated from the furnacechamber;means for conveying combustible products from the furnace-chamber to thesecondary combustion-chamber; and means directly connecting the fire-boxof the furnacechamber with the secondary combustion-chamber of thesecond boiler to conveya flame or heated products of combustion intosaid secondary combustion-chamber, to ignite the combustible productsconveyed thereto from the furnace-chamber.

3. In an apparatus of the class specified,

the combination of a boiler having a furnacechamber comprising afire-box and an original combustion-chamber; an independent secondboiler having a secondary combustionchamber independent of and separatedfrom the furnace-chamber; flues extending through said first boiler, forconveying combustible products from the furnace-chamber to the secondarycombustion-chamber; a passageway directly connecting the fire-box of thefurnace-chamber with the secondary combustion-chamber of the secondboiler to convey a flame or heated products of combustion into saidsecondary combustion-chamber, to ignite the combustible productsconveyed thereto from the furnacechamber; and flues extending throughthe second boiler and in communication with the secondarycombustionchamber.

4. In an apparatus of the class specified, the combination of threeindependent boilers; a furnace-chamber below two of said boilers, andcomprising a fire-boX and an original combustion-chamber; and asecondary combustion-chamber below one of said boilers, and independentof and separated from said furnace-chambers; means for conveyingcombustible products from the two furnace-chambers to the secondarycombustion-chamber; and means directly connecting the fire-boxes of thetwo furnace-chambers with the secondary combustion-chamber to convey aflame or heated products of combustion into said secondary combustion-chamber, to ignite the combustible products conveyed thereto from thefurnace-chambers.

5. In an apparatus of the class specified, the combination of a seriesof independent boilers' disposed side by side; furnace-chambers belowthe outer boilers thereof, and comprising a fire-box and an originalcombustionchamber; and the intermediate boiler having a secondaryindependent combustion-chamber below the same and intermediateof thefurnace-chambers and separated therefrom; flues extending through theouter boilers and in communication with the furnace-chambers anddowntake-flues, connecting said flu es and secondary combustion-chamber,to convey combustible products from both of the furnace-chambers of theouter boilers to said secondary combustion-chamber; and transversepassage-wa-ys directly connecting both fire-boxes of thefurnace-chambers with the secondary combustion chamber to convey a flameor heated products of combustion to said secondary combustion-cham ber,to ignite the combustible products conveyed thereto from thefurnace-chambers.

6. In an apparatus of the class specified, the combination of a seriesof boilers disposed side by side, the outer boilers of the series having furnace-chambers below the same comprising originalcombustionchambers and fire-boxes, and the intermediate boiler of theseries having a secondary combustion-chamber below the same andindependent of and separated from said furnace-chambers; each of saidouter boilers having flues extending therethrough and in communicationwith the furnace-chambers, and having a chamber adj acent to one endthereof into which said flues open; a chamber adjacent to and openinginto the secondary combustion-chamber; flues connecting the chambersadjacent to the outer boilers with the chamber opening into thesecondary combustion-chamber; and passageways directly connecting thefire-boxes of the furnace-chambers with the secondary combustion-chamberto convey a flame or heated products of combustion to said secondarycombustion-chamber, to ignite the combustible products carried theretofrom the furnacechamber.

7. In an apparatus of the class specified, the combination of a seriesof independent boilers disposed side by side, the outer boilers of theseries having furnace-chambers below the same comprising originalcombustionchambers and fire-boxes, and the intermediate boiler having asecondary combustionchamber below the same and independent of andseparated from said furnace-chambers; each of said outer boilers havingflues extending therethrough in communication with the furnace-chambers, and having a chamber adjacent to one end thereof intowhich the said flues open; a chamber adjacent to and opening into thesecondary combustion-chamber; means for admitting fresh air to saidcombustion -chamber; flues connecting the outer boiler-chambers with thechamber opening into the secondary combustion-chamber; and passage-Waysdirectly connecting the fireboxes of the furnace-chambers with thesecondary combustion chamber to convey a flame or heated products ofcombustion to said secondary combustion-chamber,to ignite thecombustible products carried thereto from the furnace-chambers.

8. In an apparatus of the class specified,

the combination with a series of independent boilers disposed side byside, the outer boilers thereof having furnace-chambers below the same,comprising original combustion-chambers and fire -boxes, and theintermediate boiler having a secondary combustion-chamber below the sameand independent of and separated from said furnace-chamber; each of saidouter boilers having flues extending therethrough in communication withthe furnace-chambers, and having a chamber adjacent to one end thereofinto which said flues open; a chamber adjacent to and opening into thesecondary combustion-chamber; flues connecting the chambers adjacent tothe outer boilers with the chamber opening into the secondarycombustion-chamber; passage-ways directly connecting the fire-boxes ofthe furnacechambers with the secondary combustion-chamber to convey aflame or heated products of combustion to said secondarycombustion-chamber, to ignite the combustible products carried theretofrom the furnace-chambers; flues extending through the intermediateboiler and in communication with the secondary combustion-chamber; andmeans adjacent to the downtakeflues, into which the flues of theintermediate boiler open to convey the smoke from the secondarycombustion-chamber.

9. In an apparatus of the class specified, the combination of threeindependent boilers disposed side by side, the intermediate boilerthereof extending below the outer boiler; a furnace-chamber below eachof the outer boilers thereof, and comprising a fire-box adjacent to oneend thereof and a combustionchamber in the rear thereof, and theintermediate boiler having a secondary combustion-chamber below the sameand extending from end to end thereof; alongitudinal wall separating thefurnace-chambers from the secondary combustion chamber; flues extendingthrough the outer boilers of the set and communicating with the originalcombustion-chambers in the rear of said boilers; downtake-flues at theforward ends of each outer boiler into which the boiler-flues open, saiddowntake-flues opening into the secondary combustion-chamber beneath theintermediate boiler; transverse passages extending through said wallsand directly connecting the fire-boxes with the secondarycombustionchamber; flues extending through the inner boiler of the setand communicating with the secondary combustion-chamber in the rear ofsaid boiler; and a smoke-box at the for ward end of the intermediateboiler, and into which the fines thereof open.

LOUIS HALLBAUER. 'Witn esses W. H. LEWIs, J OHN Q. THAYER.

